DE102016007852A1 - Storage system for other radioactive substances - Google Patents

Abstract

The invention relates to a storage system for other radioactive substances with at least one closable storage space (10, 52, 54, 56). In a core material storage system, walls (12, 20, 23, 24), ceiling (22) and floor (36) of the at least one closable storage space have a predetermined resistance to intrusion by third parties. Detector elements (26) are arranged in the at least one closable storage space (10, 52, 54, 56) by which at least the walls (12, 20, 23, 24) of the at least one closable storage space are monitored for intrusion attempts. In addition, further detector elements (19) are arranged in the at least one closable storage space (10, 52, 54, 56) through which an access element (14, 58) to a closable storage space (10, 52, 54, 56) at least its opening or Close are recognizable. In addition, a monitoring system (62) is connected to the detector elements (26) and the other detector elements (19), and if necessary, can be sent with the monitoring system (62) alarm messages.

Description

The invention relates to a storage system for other radioactive substances with at least one closable storage space.

The security of other radioactive substances within the meaning of paragraph 2 (3) of the Atomic Energy Act must be guaranteed at all times in accordance with the applicable guidelines. It is known that other radioactive substances are stored on the site of a nuclear power plant in simple storage facilities, for example standard containers. The protection of the other radioactive substances from access by unauthorized persons is ensured by the fact that the storage facility is arranged within an outer security area (ASB) of the power plant. The ASB thus fulfills part of the safety-relevant requirements and regulations.

If, for certain reasons, such as when a nuclear power plant is being decommissioned, the ASB is now being dissolved, the other radioactive materials may no longer be stored in the simple storage facilities alone on the site of the nuclear power plant. The corresponding specifications and safety regulations are then no longer met. Accordingly, the stored nuclear material must be relocated to another location that meets the safety requirements of the ASB, for example, on the site of another nuclear power plant or in a building that meets the required safety standards. The transport routes and times required for such a solution for storing or retrieving the other radioactive substances are associated with a correspondingly high outlay. In addition, the other radioactive substances during transport represent an additional safety risk.

Based on this prior art, it is an object of the invention to provide a storage system for other radioactive materials of the type mentioned above, which provides storage space for other radioactive substances with relatively little effort and compliance with safety regulations.

The object is achieved by a storage system for other radioactive substances of the aforementioned type, which is characterized in that walls, ceiling and bottom of the at least one closable storage space has a predetermined resistance to intrusion of third parties that detector elements are arranged in the at least one closable storage space , by which at least the walls of the at least one closable storage space are monitored for intrusion attempts, that further detector elements are arranged in the at least one closable storage space, by which an access element to a closable storage space at least its opening can be seen that a monitoring system with the detector elements and the further detector elements is connected, and that alarm messages can be sent with the monitoring system in case of need.

The idea according to the invention advantageously enables, for example after the removal of the ASB by means of comparatively easy-to-implement measures on a closable storage space, this storage space to essentially fulfill the required safety regulations for the storage of other radioactive substances. These are performed on the walls, the ceiling and possibly the bottom of a closable storage room with a predetermined resistance. For example, this may be determined according to the requirements of a resistance class intended for the specific case of storage. On the other hand measures are taken to enable the detection of intrusion attempts by persons. This is done by the use of detector elements. A detected fault, intrusion or sabotage attempt is thus detected by the monitoring system, converted into a corresponding alarm message and sent to a competent authority. This can be, for example, security personnel on the system on which the storage system for other radioactive substances is located. But this can also be an object security service or the police. All in all, the requirements of the principles of prudent management of other radioactive material are met (for example: Annex 2 of the Convention on the Physical Protection of Nuclear Material of 26 October 1979).

An advantageous embodiment of the storage system for other radioactive substances provides that the detector elements are formed as a mat or fence panel having detectors, through which damage to the respective mat or the relevant fence panel can be seen.

Such an embodiment of the detector elements is also referred to as a safety fence or safety mat, wherein the respective mat part can be configured, for example, of intertwined tubes without welding points and screw connections. Detection of damage or sabotage takes place, for example, by closed-circuit current monitoring or concealed sabotage contacts. The detector elements are not visible from a position outside of a storage room and also increase by their mechanical stability and the resistance in the area concerned.

An advantageous further development of the subject invention is characterized in that cover elements are arranged in front of the detector elements on the side facing the interior of the space of at least one storage room.

This ensures that the detector elements are not visible from the interior of the room out. In addition, it is prevented that the detection modules are protected from damage by loading and unloading a lockable storage room, for example, with containers or lattice boxes.

A further refinement consists in that the further detector elements of the at least one closable storage space can be monitored for opening (eg magnetic or spring-loaded contact), closure (eg magnet or striking plate contact), access (eg area monitoring by Wires, light barrier, structure-borne sound, microwave motion or ultrasonic motion detector) and sabotage (eg closed-circuit principle or sabotaging contacts) are formed.

The other detector elements are intended primarily to monitor at least the opening of the access element, so for example a door, a door, a gate or the like. This is done in a particularly simple manner with stop switches or buttons which send a signal or open or close a signal line as soon as a closing mechanism is actuated or the access element or parts thereof are moved, ie with components for opening, closing and passage monitoring. There are a variety of ways to use such switching elements to a convenient location for the detection task, for example, bearing guard for a closing element or a lock. In addition, there are also motion detectors or infrared sensors, which are arranged inside a lockable storage room and their detection area is directed to the location to be monitored, so for example the door.

Another embodiment of the subject invention provides that the detector elements and / or the other detector elements are connected by signal lines to the monitoring system, and that the signal lines are monitored for signal interruption and / or the detector elements and the other detector elements to function.

In principle, it is possible that the detector or the further detector elements are connected to the monitoring system with all conceivable technical possibilities of signal transmission. However, signal lines are very reliable and, compared to radio transmission technologies, less susceptible to interference and comparatively difficult to manipulate.

Further advantageous embodiment possibilities can be found in the further dependent claims.

Reference to the embodiments illustrated in the drawings, the invention, further embodiments and other advantages will be described in detail.

Show it

1 an example of a security container in perspective, as well

2 an example of a storage system.

1 shows an example of a 20-foot security container 10 in perspective view. In this case, different side surfaces or parts of these side surfaces are cut free to the view inside the cuboid security container 10 to grant.

A first front page 12 of the security container 10 has a double-leaf access door 14 on, but only a first door 16 is shown in the closed state. A door linkage 18 is on the first door 16 is shown and by appropriate movement of a locking lever, not shown, the first door 16 in a first state to lock and thus the security container 10 inaccessible. By turning the locking lever can the door linkage 18 be brought accordingly in the open position. A monitoring of the two positions open or closed by a corresponding position detector for the locking lever which is not shown in the figure. Another detector is as position detector 19 shown and so on the first front page 12 positioned so that it is actuated and accordingly provides a signal when the corresponding end of the door linkage 18 in the closed state in a recess provided for the locking of the first door leaf 16 is arranged. In the selected view is an inside of a second end face 20 as a wall surface of the security container 10 shown.

A first sidewall facing the viewer 23 is completely cut free. A container roof 22 is largely cut free and only a small roof area is recognizable as a roof or ceiling surface. The chosen representation makes it possible to look at the inside of a first side wall 24 of the standard container 10 to look. On the second front page 20 pointing half of first side wall 24 is exemplified the layered wall structure of the side walls. On the inside of the first side wall 24 is initially a detection module 26 shown that is designed as a mat. In this case, the structural elements of the mat are formed as tubes or tubes and the individual tubes are designed wave-shaped. These are interconnected or intertwined so that the mat shows with square single surfaces. In the example chosen, sensor lines are routed in each of the tubes, which detects an impermissible deformation of the individual tubes of the mat and thus also an attempt to penetrate through the corresponding wall of the safety container 10 is interpretable and identifiable. A detection module 26 is not just for the walls of the security container 10 usable, but also for the access elements, the ceiling or the floor.

As cover of the detection module 26 is a cover plate 28 shown so that the detection module 26 between the second side wall 24 and the cover plate 28 is arranged. On the one hand, it is advantageously prevented that the detection module 26 is readily apparent, on the other hand, it is ensured that when loading and unloading the security container 10 an unwanted damage is prevented by the moving cargo. As the material for the cover plate wood is selected in a simple embodiment. However, here are a variety of materials conceivable, for example, the resistance class of the security container 10 increase or even ensure a certain degree of radiation protection, so that it is not readily apparent from the outside that stores radioactive material in such a container. Just as an example, the ballistic wall armor and bullet-resistant armored panels CPP from Technolog are mentioned here. As a further possibility to realize a surface surveillance, for example a wall, it is also possible to lay one or more wires over the surfaces. This is done, for example, with a pattern of several wires parallel or crosswise or meandering or in other conceivable patterns. In addition, an intrusion attempt from the outside, for example, by the second side wall 24 from the detection module 26 recorded and reported. The increased resistance-providing cover plate is reached by the intruder but only after the detection of the intrusion. The further penetration is complicated and slowed down advantageous. By detecting the penetration, however, countermeasures can already be introduced.

The structure of the standard container 10 has a support frame, the four vertical corner support 30 has, whose upper ends with the corners of a rectangular ceiling frame 32 and their lower ends with the corners of a rectangular floor frame 34 are connected. The ceiling frame 32 carries the container roof 22 , which in addition to a roof surface on the side facing the container interior also a detection module 26 and one or more cover plates 28 may have in the layered structure described above. However, this is not shown in this figure.

The floor frame 34 is with a floor 36 connected, consisting of several floor panels 38 is formed. The floor 36 In essence, it must absorb the load of the material in the safety container 10 is stored. This is indicated by the ground 36 Floor cross members 40 on that with the floor frame 34 are connected and to the container interior with the bottom plates 38 are occupied.

In this way, a standard container becomes a stable security container 10 redesigned, which also has important safety features, so that entry into this storage space is difficult.

2 shows an example of a storage system with a storage room arrangement 50 that a first storage room 52 , a second storage room 54 as well as a third storage room 56 having. Such storage rooms 52 . 54 . 56 For example, security containers 10 be, it is also conceivable that here storage boxes, concrete boxes or other standardized storage options are used. In the example shown, the storage rooms 52 . 54 . 56 already equipped with special fence elements as detector elements for monitoring all walls, ceilings and floors as well as with access sensors for monitoring a gate position of the access gates 58 as well as other sensors that indicate the closed position of the locks 60 monitor the conditions open or closed. The access sensors, sensors and detector elements are within the respective storage space 52 . 54 . 56 wired, preferably in such a way that the wiring inside is not recognizable. In addition, the wiring is in each case at a certain point on the side facing away from the view of the storerooms 52 . 54 . 56 guided and guided together in a plug element. As a plug element, for example, a so-called Harting plug Harting company can be used.

It is still a surveillance container 62 shown with cables 64 is pluggable connected to the plug-in elements described above. This ensures in a particularly favorable manner that a monitoring system in the monitoring container 62 cooperates with the access sensors, sensors and detector elements and particularly reliably detects certain sources of error in the connection to the sensors and detector elements, for example, when a plug is pulled, a cable is cut or otherwise interrupted or a censor or a management element fails or properly in generates a signal for a monitoring case. All these conditions are particularly easy with the surveillance system 62 detectable, which is configured, for example, as a burglary alarm system (EMA) or as a hazard warning system (GMA).

In the example shown according to the 2 is the surveillance system in the surveillance container 62 arranged. This prevents the monitoring system itself from being sabotaged. Ideally, the monitoring system also has a redundant independent power supply, so that the monitoring system remains in operation even if it should be disconnected from the external power supply. In this case, it is always ensured that in the event of an alarm, a corresponding alarm signal in the selected example is sent to security personnel in an alarm room 66 by means of a leased line 68 is transmitted. The alarm room 66 is constantly busy and will react immediately to an alarm signal. Likewise, it is conceivable that the alarm messages are transmitted directly to the police or to an external security service or to another security system or several of these options are used in parallel. The signal transmission of the alarm signal can alternatively be done via radio, telephone or electronic data transmission.

It is also within the inventive idea that the surveillance system in any of the storage rooms 10 . 52 . 54 . 56 . 62 but in another room, for example an existing control room in an existing building on the site. In fact, there is the possibility that a security alarm system or burglar alarm system already exists, so that the storage rooms 10 . 52 . 54 . 56 . 62 simply be switched on the existing monitoring system.

LIST OF REFERENCE NUMBERS

10

security container

12

first end face

14

access door

16

first door

18

door linkage

19

position detector

20

second end face

22

container roof

23

first sidewall

24

second side wall

26

detection module

28

cover

30

corner supports

32

ceiling frame

34

bottom frame

36

ground

38

floor tiles

40

Floor cross members

50

Stockroom arrangement

52

first storage room

54

second storage room

56

third storage room

58

access gates

60

lock

62

monitoring container

64

electric wire

66

alarm Response

68

Leased line

Claims (11)

Storage system for other radioactive substances with at least one lockable storage room ( 10 . 52 . 54 . 56 ) characterized in that walls ( 12 . 20 . 23 . 24 ) Blanket ( 22 ) and / or soil ( 36 ) of the at least one closable storage space has a predetermined resistance to penetration by third parties, that detector elements ( 26 ) in the at least one lockable storage room ( 10 . 52 . 54 . 56 ) are arranged, through which at least the walls ( 12 . 20 . 23 . 24 ) of the at least one closable storage space are monitored for intrusion attempts that further detector elements in the at least one closable storage space ( 10 . 52 . 54 . 56 ) are arranged, through which an access element ( 14 . 58 ) to a lockable storage room ( 10 . 52 . 54 . 56 ) at least its opening or closing can be seen that a monitoring system ( 62 ) with the detector elements ( 26 ) and the further detector elements ( 19 ) and that with the monitoring system ( 62 ) Alarm messages can be sent if necessary. Storage system for other radioactive substances according to claim 1, characterized in that the detector elements ( 26 ) as a mat ( 26 ), Fence field, wires, meander-shaped wires or other area monitoring elements are formed, the detectors, by the damage to the respective detector element ( 26 ) is recognizable. Storage system for other radioactive substances according to claim 1 or 2, characterized in that in front of the detector elements ( 26 ) on the interior of the at least one storage room ( 12 . 20 . 23 . 24 ) facing side cover elements ( 28 ) are arranged. Storage system for other radioactive substances according to one of the preceding claims, characterized in that the cover elements, Metal plates, composite panels, armor elements bullet resistant panels or adapted to a resistance class wall elements are. Storage system for other radioactive substances according to one of the preceding claims, characterized in that the further detector elements ( 19 ) of the at least one closable storage space are designed for monitoring for opening, closure, access and sabotage. Storage system for other radioactive substances according to one of the preceding claims, characterized in that a monitoring system-free lockable storage space ( 52 . 54 . 56 ) with the monitoring system ( 62 ) connected is. Storage system for other radioactive substances according to one of the preceding claims, characterized in that the detector elements ( 26 ) and / or the further detector elements by signal lines ( 64 ) with the monitoring system ( 62 ) and that the signal lines ( 64 ) signal interruption or / and the detector elements ( 26 ) or the other detector elements are monitored for function. Storage system for other radioactive substances according to claim 6, characterized in that the signal lines ( 64 ) are divided into sections, and that a first section between the detector elements ( 26 ) and the monitoring system ( 62 ) of a lockable storage space to be monitored ( 12 . 20 . 23 . 24 ) is brought together on a plug connection. Storage system for other radioactive substances according to one of the preceding claims, characterized in that the monitoring system in one of the lockable storage rooms ( 20 ) is arranged. Storage system for other radioactive substances according to one of the preceding claims, characterized in that the monitoring system is a hazard alarm system or a burglar alarm system. Storage system for other radioactive substances according to one of the preceding claims, characterized in that a closable storage space is a standard container.

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